Year	per 1,000 people
1960	25.43
1961	14.24
1962	10.02
1963	10.04
1964	11.5
1965	9.5
1966	8.83
1967	8.43
1968	8.21
1969	8.03
1970	7.6
1971	7.32
1972	7.61
1973	7.04
1974	7.34
1975	7.32
1976	7.25
1977	6.87
1978	6.25
1979	6.21
1980	6.34
1981	6.36
1982	6.6
1983	6.9
1984	6.82
1985	6.78
1986	6.86
1987	6.72
1988	6.64
1989	6.54
1990	6.67
1991	6.7
1992	6.64
1993	6.64
1994	6.49
1995	6.57
1996	6.56
1997	6.51
1998	6.5
1999	6.46
2000	6.45
2001	6.43
2002	6.41
2003	6.4
2004	6.42
2005	6.51
2006	6.81
2007	6.93
2008	7.06
2009	7.08
2010	7.11
2011	7.14
2012	7.13
2013	7.13
2014	7.12
2015	7.07
2016	7.04
2017	7.06
2018	7.08
2019	7.09
2020	7.07
2021	7.18
2022	7.37